diff --git a/src/osgParticle/ParticleSystem.cpp b/src/osgParticle/ParticleSystem.cpp
index a01f2f025..6958f4bb8 100644
--- a/src/osgParticle/ParticleSystem.cpp
+++ b/src/osgParticle/ParticleSystem.cpp
@@ -174,7 +174,7 @@ void osgParticle::ParticleSystem::update(double dt, osg::NodeVisitor& nv)
         osgUtil::CullVisitor* cv = nv.asCullVisitor();
         if (cv)
         {
-            osg::Matrixd modelview = *(cv->getModelViewMatrix());
+            osg::Matrix modelview = *(cv->getModelViewMatrix());
             double scale = (_sortMode==SORT_FRONT_TO_BACK ? -1.0 : 1.0);
             double deadDistance = DBL_MAX;
             for (unsigned int i=0; i<_particles.size(); ++i)